Can we add formatting like underlining or italicizing of poll or options, say by adding HTML tags?
This is done! You can italicize and make text bold in the poll title with HTML tags. You can read how here: http://polleverywhere.uservoice.com/knowledgebase/articles/834333
Unfortunately, this will not work to individually add colors. It's only for bold and italicizing. We do have some color abilities to change the color of all the text of the poll title, but not individual words.
Will this work to add color to certain words in a title?
David Diemert commented
PLEASE add this feature. I make polls for Microbiology and being able to italicize names of organisms is essential. - David Diemert (George Washington University)
We're a medical school, so italics are the pressing issue for us. It’s quite important for Microbiology, since we always write the names of bugs in italics. It's a pretty standard nomenclature for that subject area, so our faculty are asking to be able to do it.
Good ideas! We have some support for this through editing the visual settings of a poll. We also support line breaks in the question title by entering a " \n " where you would like the break. More info here: http://bit.ly/pyD9Bh and here: http://bit.ly/su9DQh
Of the formatting methods you listed which were the most important to you (after seeing the existing links above)?